Spray painting or whitewashing machine.



No. 667,538. g Patented Feb; 5, 190i. H. A. SHELDON.

SPRAY PAINTING DR WHITEW'ASHING MACHINE.

(Application filed July 26, 1900.)

(No Model.)

Attorney UNITE STATES scion.

PATENT HENRY A. SHELDON, OF AYLMER, CANADA.

$PECIFICATION forming part of Letters Patent No. 667,588, dated February5, 1901.

Application filed July 26, 1900. serial No. 24,964. N0 model.)

T0 all whom, it Wtcty concern:

Be it known that I, HENRY A. SHELDON, a subject of the Queen of GreatBritain, and a resident of Aylmer, in the county of Elgin, in theProvince of Ontario, Canada, have invented a certain new and usefulSpray Painting or Whitewashing Machine, of which the following is aspecification.

This invention relates to a device for applying paint, whitewash, orother material by spraying a solution thereof on the object by themechanism illustrated in the accompanying drawings, in which Figure 1 isa side View, partly in section, of a device embodying my invention. Inthis view the end of the barrel or reservoir in which the solution iscontained is removed. Fig. 2 is an enlarged detail side view, partly insection, of the cylinder and plunger.

In the accompanying drawings the numeral 1 designates the handle, and 2the handle-lever, which is secured to the handle 1 and which is alsopivotally secured to the upper end of the machine by the bolt 3.

4: designates the outlet-chamber; 5, an airchamber; 5, a partitionseparating said airchamber from said outlet-chamber; 6, a pipe or tubefor conducting the solution from said air-chamber to saidoutlet-chamber, and 7 a coupling by which the hose is attached to themachine and connected with the outlet-chamher 4.

8 designates a yoke which secures the machine to the barrel 9 or otherreceptacle in connection with which it is used.

10 designates a stop or cross-bar in the lower end of the air-chamber 5to regulate the movement of the check-valve l1 and to prevent the latterfrom lifting out of the plunger 12, and 13 designates an agitating andwaste cock with which the lower end of the air-chamber 5 is provided,which cock is opened and closed by the handle 14, the latter permittingthe opening or closing thereof from the outside of the barrel or otherreceptacle to drain the machine after use or to agitate the solution inthe barrel by a small stream of the solution from the air-chamber whenthe machine is in operation.

12 designates a hollow plunger, the upper end 15 of which forms a seatand the interior portion near the upper end a guide for the ribbed stem16 of the check-valve 11, and 17 designates a guiding cross-bar in theplunger 12, through which the stem 18 of the valve 19 passes.

20 designates a metallic spring ring-pack ing inserted in the grooves 21in the lower end of the plunger 12, between the latter and the cylinder22.

23 designates a valve-seat formed in the lower end of the cylinder 22,and 24isa bellshaped casting secured to the lower end of the cylinder 22for holding the strainer 25, the object of the latter being to preventdirt or unmixed particles entering said cylinder.

26 designates a collar secured to the cylinder 22, to which the forkedbail 27 is pivotally secured, the other end of said bail being pivotallysecured to the handle-lever 2 by the bolt 30.

28 designates an agitator provided with perforations 29 and secured tothe lower end of the cylinder 22.

The operation is as follows: After filling the barrel 9 with the paint,whitewash, or other solution to the height desired the hand end of thehandle 1 is grasped and lowered, whereby the bail end is raised, as wellas the bail 27, cylinder 22, and agitator 28, and as the cylinder 22 israised the valve 19 is closed on the valveseat 23, and this valve 19 israised with said cylinder and is guided and securely held on said seatby the stem 18, extending through the guiding cross-bar 17 in theplunger. As the cylinder 22 is raised the solution therein opens thecheck-valve 11, the movement of which is regulated by the stop cross-bar10, which permits said solution to pass into the air-chamber 5, andafter sufficient has accumulated therein said solution passes throughthe tube 6 into the outletchamber 4 and from the latter through thecoupling 7 to the hose secured thereto, (not shown,) which conducts thesolution to any .point or object desired. On raising the hand end of thehandle 1 the bail end is lowered. This lowers the bail 27, cylinder 22,and agitator 28, and as said cylinder descends in the solution in thebarrel 9 said solution raises the valve 19 from the seat 23 and thesolution passes through the strainer and enters the cylinder 22, passesthe guide-bar 17, extending across the plunger, and flows up into thelatter, and as the hand end of the handle is lowered again the operationhereinbefore described takes place.

The object of separating the air-chamber from the outlet-chamber andproviding a tube connection between the two, one end of which tubeextends almost to the inlet end of the air-chamber, is to compress theair in said airchamber, so that when the cylinder stops for its returnmovement this air will expand and continue the flow of the solutionduring the interval of inaction. Consequently a continuous and even flowof the solution is maintained.

By slightly opening the agitating or waste cook 13 while the device isin operation a small stream of the solution ,is directed into the mainbody of the latter in the barrel for the purpose of agitating saidsolution, and by completely opening said waste-cock 13 the machine maybe drained out after using.

In ordinary practice fibrous packing of various kinds is generally usedbetween the cylinder and plunger; but this fibrous packing absorbs andretains the gritty particles of the different solutions, which in ashort time wears the cylinder to such an extent that frequent repackingof the plunger is required, all of which is avoided and completelyprevented by the use of my metallic spring ringpacking herein shown anddescribed.

As the cylinder 22 is raised and lowered the agitator 28 is vibrated inthe solution, which keeps the solution thoroughly and evenly mixed andof a uniform consistency, and this action is further supplemented by thesolution passing through the perforations 29 in said agitator 28.

The plunger 12 is stationary, being rigidly secured to the air-chamber5, and the latter is rigidly secured to the barrel 9 by the yoke 8, andthe cylinder 22 being fitted to the exterior face of the plunger 12 asthe handle 1 is operated the cylinder 22 is reciprocated lengthwise onand works over said plunger 12, thus holding all the parts firmly whilein operation.

As a result a machine is produced by which the solution will bethoroughly and evenly agitated and mixed, one which will be easy ofoperation and of great capacity, and one of simplicity of constructionand great durability.

Having thus described my invention, I claim-- In a device of thecharacter described, the combination with a tubular plunger having avalve at its upper end, a guiding cross-bar within its lower end, andmetallic packingrings surrounding said lower end; d! a cylindersurrounding and longitudinally movable upon said plunger and extendingbelow the same, a valve-seat at the lower end of the cylinder, 21 valveresting on this seat and having a stem extending through said guide, andmeans for reciprocating the plunger and cylinder with respect toe-achother, all as and for the purpose set forth.

In testimony whereof I have signed my name in the presence of the twoundersigned witnesses.

HENRY A. SHELDON.

Witnesses:

P. J. EDMUNDS, V. H. DOUGLAS.

